Mimecast announces pricing of initial public offering

Mimecast today announced the pricing of its initial public offering of 7 750 000 ordinary shares at a price to the public of $10 per share. All of the shares are being offered by Mimecast. In addition, Mimecast has granted the underwriters a 30-day option to purchase up to an additional 591 000 shares from the company, and up to an additional 571 500 shares from certain selling shareholders. The shares are scheduled to begin trading on the Nasdaq Global Select Market under the ticker symbol "MIME" on 19 November 2015. The offering is expected to close on 24 November 2015.

Goldman Sachs is acting as lead book-running manager, and Barclays Capital, Jefferies, and RBC Capital Markets are acting as book-running managers. Oppenheimer is acting as co-manager.

A final prospectus for the offering, when available, may be obtained from Goldman Sachs, Attention: Prospectus Department, 200 West Street, New York, NY 10282, telephone: (866) 471-2526, facsimile: (212) 902-9316, or by e-mailing:prospectus-ny@ny.email.gs.com, from Barclays Capital, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, telephone: (888) 603-5847 or by mailing: barclaysprospectus@broadridge.com, from Jefferies, Attention: Prospectus Department, 520 Madison Avenue, New York, NY 10022, telephone (877) 821-7388 or by e-mailing:prospectus_department@jefferies.com, and from RBC Capital Markets, 200 Vesey Street, 8th Floor, New York, NY 10281-8098; Attention: Equity Syndicate; Phone: 877-822-4089; E-mail: equityprospectus@rbccm.com.

A registration statement relating to these securities was filed with, and declared effective by, the Securities and Exchange Commission. The registration statement can be accessed through the SEC's Web site at www.sec.gov. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor may there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.